GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1557722  Size: SH
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.

  2. Object Number: 1557725  Size: SH

    Important: DO NOT remove the oil pump screen from the pipe. The pipe and oil pump screen are serviced as a complete assembly.

  3. Remove the oil pump screen, if necessary.
  4. The oil pump screen has a press fit into the oil pump cover.


    Object Number: 1557726  Size: SH
  5. Remove the oil pump cover bolts.

  6. Object Number: 1557727  Size: SH
  7. Remove the oil pump cover.

  8. Object Number: 1557729  Size: SH
  9. Remove the oil pump drive gear and the oil pump driven gear.
  10. Matchmark the gear teeth for assembly.

  11. Object Number: 1557732  Size: SH

    Caution: Wear safety glasses in order to avoid eye damage.

    Caution: In some models, the pressure regulator valve spring is under pressure. Remove the retaining pin carefully in order to avoid bodily injury.

  12. Remove the following items:
  13. 7.1. The oil pump pressure relief valve spring straight pin
    7.2. The oil pump pressure relief spring

    Caution: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin.

    7.3. The oil pump pressure relief valve--If the valve is stuck, soak the pump housing in cleaning solvent.

    Object Number: 1557722  Size: SH
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.

  2. Object Number: 1557725  Size: SH

    Note: DO NOT remove the oil pump screen from the pipe. The pipe and oil pump screen are serviced as a complete assembly.

  3. Remove the oil pump screen, if necessary.
  4. The oil pump screen has a press fit into the oil pump cover.


    Object Number: 1557726  Size: SH
  5. Remove the oil pump cover bolts.

  6. Object Number: 1557727  Size: SH
  7. Remove the oil pump cover.

  8. Object Number: 1557729  Size: SH
  9. Remove the oil pump drive gear and the oil pump driven gear.
  10. Matchmark the gear teeth for assembly.
  11. Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1557732  Size: SH

    Warning: In some models, the pressure regulator valve spring is under pressure. Remove the retaining pin carefully in order to avoid bodily injury.

  12. Remove the following items:
  13. 7.1. The oil pump pressure relief valve spring straight pin
    7.2. The oil pump pressure relief spring

    Warning: Refer to Cleaning Solvent Warning in the Preface section.

    7.3. The oil pump pressure relief valve--If the valve is stuck, soak the pump housing in cleaning solvent.